The Greenshift – animation and page builder blocks plugin for WordPress is vulnerable to arbitrary file uploads due to missing file type validation in the gspb_make_proxy_api_request() function in versions 11.4 to 11.4.5. This makes it possible for authenticated attackers, with Subscriber-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible. The arbitrary file upload was sufficiently patched in 11.4.5, but a capability check was added in 11.4.6 to properly prevent unauthorized limited file uploads.

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-434

https://plugins.trac.wordpress.org/browser/greenshift-animation-and-page-builder-blocks/trunk/init.php#L3340

https://plugins.trac.wordpress.org/changeset/3270279/greenshift-animation-and-page-builder-blocks/trunk/init.php

https://plugins.trac.wordpress.org/changeset/3273212/greenshift-animation-and-page-builder-blocks/trunk/init.php

https://plugins.trac.wordpress.org/changeset/3276168/greenshift-animation-and-page-builder-blocks/trunk/init.php

https://www.wordfence.com/threat-intel/vulnerabilities/id/0db4671e-1989-44a4-babe-ed699c7f3a52?source=cve